Loom.



A. E. GHERNACK.

Loom.

APPLICATION FILED HAY 2. 1912. 1,1 17,791 Patented Nov. 17, 1914.

4 SHEETS-SHEET 1.

A TTURNEYS A. E. CHERNACK.

LOOM.

APPLICATION FILED MAY 2.1912.

Patented Nov. 17, 1914.

4 SHEETS A511111112 UWE/WOR By MM :HJM

A TMR/VHS A. E. CHERNAGK.

LGOM.

APPLICATION FILED MAY 2.1912.

Patented Nov. 17, 1914.

4 SHEETS SHEET 3 NVENTJ A TTHIVEYS A. E. GHERNAGK.

LOGM.

APPLICATION Plum MAY 2, 1912.

1,1 17,791 Patented Nov. 17, 1914.

4 SHEETS-SHEET 4.

WITNESSES: IN VEN TOR A TTURNE 1S ABEL E. CHEIRNACK, 0F PROVIDENCE, RHODE ISLAND.

LOOM.

animer.

Specification of Letters Patent.

Patented Nov. 17, 1914.

Applicatiin filed May 2. 1912. Serial No. 8%,845

T0 all whom it may concern Be it known that I, ABEL E. CHERNACK, a subject of the Czar of Russia, residing in the city of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Looms, of which the following is a s eciication.

he main object of my invention is to so construct a loom that a large shuttle containina large bobbinof weft thread and therefre of considerable weight can be driven positively and at suitable speed through a shed of any desired width. In connection with my improvements in the shuttle mechanism, there are certain other features of improvement which are fully described hereinafter.

In the accompanying drawings Figure l is a sectional elevation showing the principal parts of a loom embodying my invention; Fig. 2 is a corresponding end elevation of the com lete loom; Fig. 3 is a front elevation of t e saine with a part in section, and with parte broken away to get the view within the limits of the sheet; Fig. `Lis a dia rammatic plan view of the shuttle and its rivers; Fi 5 is a vertical section of the reed frame an raceway, drawn to a larger scale; Fig. 6 is a plan view, partly in section, of the reed frame and raceway; Fig. 7 is a side elevation of the shuttle frame detached, with one of the bearin in section; Fig. 8 is an end elevation osthe shuttle frame; Fig. 9 is a sectional view on the line 9-9, Fig. 2, drawn to a larger scale.

Although m invention ma be applied to a loom wit vertical hedd es and horizontally arranged warps, I prefer to apply my improvements to a loom in which the heddles are horizontal' and the Warps travel vertically downward, and I have shown my. invention embodied in a loom of this latter type in the accompanying drawings.

he frame F o the machine, which may be of any suitable construction, supports at its upper art a warp beam B, from which the warp t reads ass under two rollers b, b, and over a roller l and are thence led downwardl through the eyes of the heddles H, These heddles lie in horizontal planes and are reciprocated horizontally from right to left of Figs. 1-and2 b suitable means. I will hcrelnafter descri e one such means which ma be.em loyed. Suitable means, such as bereina r described,

may be employed to intermittently raise and lower the roller b1, to keep the warp threads under uniform tension during the closing and opening of the shed. From the heddles H, H1 the warp threads pass through a set of horizontal reed bars R, R, (Figs. 1, 5 and 6), the ends of which are secured in bars F extending across from one side frame to the other of the machine. These bars are separated by spacing blocks 53, Figs. 5 and (i. As shown in Fig. 5, the undersides of the reed bars are out out to provide dovetailed or undercut grooves, constituting a raceway R1, (Fig. 5), in a' horizontal plane for the shuttle, C. This shuttle is pendent from the raceway and comprises an open frame 40 with dovetailed or undercut edges 41 to run in the reed raceway R1, end frames l2 and bottom cross bar 43, (Figs. 7 and 8). The end frames are provided with suitable bearings 44 for the journals of the bobbin A, which, because of my invention, can be of large size to carry a quantity of thread. The shuttle frame is provided with an extension piece 77, (Figs. l and 3), with a guide for the thread to be laid in the shed of the warps.

The described shuttle framefhas bearings 45 for rollers E, whose axes carry at their upper ends pinions e, e. These pinions are adapted to mesh with fixed racks on the frame. For convenience the reed bars may be used to provide the racks, as shown -in Figs. 5 and 6.- By this means, as the shuttle is traversed backward and forward through the raceway, the rollers E are ositively and correspondingly rotated, and t e sizes of the inions and ro 1ers are such that the rollers ave a surface speed equal to the lineal s eed of the shuttle. I refer to use four of t ese rollers, two on eac side of the shuttle frame.

I also prefer to use in cooperation with them shuttle drivers D, D. Fig. 4, arranged. out` side the warps, and one on each side of' the shuttle. Each driver D comprises an upright frame 30 with a slide 31 mounted to travel back and forth in a guideway 32 in the cross bar F.

At each end of the frame 3() is a vertical bearing for a spindle 37, carrying at its lower end a inion 88 to gear into a rack 35 formed on t e inner face of the fixed plate 30. On the u per end of each spindle 37 is a roller G, ying in the same horizontal plane with the closely adjacent roller E ou the shuttle frame. Thus as each driver D toothed portion 84 oi the shaft 59,

is traversed back and forth in its guidevvay 32, the rollers G are positivel rotated.

As shown in Fig. Ll, the ro lers G on the drivers D stand outside of, but overlapping the respective adjacent rollers E on the shuttle, so that when the drivers are traversed in either direction in their guideways, the rollers G bearing against the rollers E will carr the shuttle along.

T c warps, as shown in Figs. l and d, ass between the rollers G and l, but since oth these rollers are positively rotated and with an equal speed or movement of the shuttle, there will be no rubbing action upon the Warp's to vvear them out or break them. lit is,

ihoive'ver, preferable to make these rollers or their suriaces oi semi-hard material such as rawhide or rubber. ln some cases, one shuttle driver D on one side ci the shuttle will suce.

il will describe a mechanism which may be used tor imparting motion to the shuttle drivers. As illustrated in Figs. 2 and 3, each shuttle driver D has attached to its opposite ends a rope passing over pulleys 56 on extensions 110 of the side trames oi t e machine.- 'thence these ropes 55 are coiled upon spirally grooved drums 57 and then pass under guide pulleys 58, llig. 8, to the pulleys at the other side or' the machine. rll`hese grooved rope drums' are lreyed to a shaft 59 mounted in lined bearings 8O and 6l on the side trame. rlhe latter bearing is screw-threaded to receive the screw-threaded end 62 oi? the shaft 59. The bearing 60 is smooth and such as to permit a slight endwise motiono the shaft 59 therein, in order that as the shaft 59 is rotated the screvv 62 in the threaded bearing 6l may vive an endwise motion to the shaft to aidE the proper Winding and unvvinding oi the ropes 55 upon the drums 57. Necessary backend-forth rotary motion 'is imparted to the shaft 59 by means oi an upright raclr 88 meshin `with a ig 9 and guided in a guide piece ldd so mounted upon the shaft 59 as to be tree to rcclr thereon to the necessary extent. The lovver end of the rack 68, Figs. 2 and 3, has a cranlr pin connection 65 to a gear Wheel 88 secured to the shaft 67. 'llhis gear wheel meshes with a pinion 88 on the driving shaft 89, which is provided with a driving pulley and ricf tion pulleys 79, 7l. The triction pulle is controlled from a hand vvheel 72, vv ose spindle 78, Fig. 2, is screw-threaded into a lrnuclrle 74- pivoted to a bent lever 75, which may svving upon a tired center 'a8 so that the opposite end of this bent lever 75 may move the friction pulley toward or from the driving pulley. As the gear vvheel 88 revolves, the raclr 88 will be traversed up and down in a swinging path and vvill impartrotary motion tirst in one direction and then in the otherA to the' 59 carwing the rope nimeer drums 57, which in turn vvill impart the necessary traversing motion to the shuttle drivers D, D and the shuttle.

l provide an oscillating beating-up comb 78, Figs. 1 and 2, mounted on an axis 79 in bearings in the frame. rll`his comb is oscillatcd on its pivot from the position shown in tell lines to that shown by dotted lines in lfig. 1, to beat up the Wett after the passage of the shuttle, and this may be donethrough rod 8O and a lever 8l on a spindle 82 and having an arm 83 with an antiiriction roller traveling in the groove of a cam 8d on the cam shaift', lilig. l. To the same arm 8i is connected a rod 88 to impart inotion to the roller b1. 'llhe cloth passes from the beatingup point downwardly and around' rollers 87 and 88 to the take-up drum 89.

'l`he heddles ll-ll, H1 may be actuated by any suitable means. lin lllig. l ll have shown indicated a mechanism which may be employed for the purpose. The heddles themselves are guided in guide pieces 90 on the top oi the cross-trames F1, F1, and have their opposite ends connected to straps passing over suitable idler and driving pul.

leys. rll`hus the heddle lll is connected at the right-hand side in F ig. l to a strap 91 passing over an idler pulley 99 and thence wound upon and having its end attached to a pulley 98. To the same pulley there is fastened the end of a strap 9d but Wound in the opposite direction and passing over the idler pulley 95 and connected to theV heddle H1. At the lett ot ld`ig. l, the heddle l-l is connected to a strap 98 passing over an idler pulley 97 ,and thence coiled upon a driving drum 98 and vvith its end fastened thereto. @n the saine driving drum there is Wound in the opposite direc= tion a strap 99 passing over an idler pulley lo@ and connected to the hcddle H1. Reciprocating motion may he imparted to the drum 98 by means ol a quadrant `lOl pivoted at 102 to the xed part of the frame meshing vvith a pinion 108 on the shaft 10i and the drum 98. 'llo'the quadrant l9l is pivotally connected a rod l05 connected to a rocking arm Miti pivot/ed to the shaft 89 and having its opposite end acted upon by e cam lo? (indicated by dotted lines) on the cam shaft 85. This cam shaft may receive its motion trom the'shat 87, Figs. 2 and 8, through beveled gearing i983.

l. A loom having a shuttle and a racevvay therefor, in combination with driving means for the shuttle, outside the tvarps, cooperating rollers on the driving ineens and the shuttle, and means whereby the rollers on both the driving means and shuttle are positively and correspondingly rotated es the shuttle is traversed to and tro.

9. A loom having o shut-de a racelili() way therefor, in combination with drivers on opposite sides of the shuttle, outside the vvarps, means for traversing said drivers, cooperating rollers on the drivers and shuttles and means whereby the rollers on the drivers and the shuttle are positively and correspondingly rotated as the shuttle is traversed.

3. A loom having heddles, a shuttle and a stationary raceway therefor, in combination with means for positively driving the shuttle to and froin the raceway, said shuttle and driving means having coperating rollers between which the warp threads pass, and gearing whereby the rollers on one of said parts are positively rotated as the shuttle is traversed to and fro.

4. A. loom having heddles, a shuttle, a stationary raceway thereor, and means for positively driving the shuttle to and fro in the raceway, coperatin rollers on the driving means and the s uttle and means whereby the rollers on both the drivin. means and the shuttle are`positively an correspondingly rotated as the shuttle is traversed to and fro.

5. A loom having horizontal heddles, reed bars under-eut to form a horizontal racevvay, and a shuttle pendent in said raceway, in combination with drivers on opposite sides of the shuttle, outside the vvarps, and coperating rollers on the drivers and the shuttle and means for traversing said drivers.

6. A loom having horizontal heddles, reed bars under-cut to form a horizontal racevvay, and a shuttle pendent in the raoeway, in combination with drivers on opposite sides o the shuttle, outside thegwarps, cooperating rollers on the drivers and the shuttle, means for traversing the d rivers and means whereby the said rollers are positively and correspondingly rotated as the shuttle is traversed to and fro:

'l'. A loom having a shuttle and a stationur raceway therefor in combination with rivin means outside the warps for traversing t e shuttle to and fro, coperating rollers on thedriving means and on the shuttle, pinions carried by both said rollers, and stationary racks with which said pinions are geared, for the urpose set forth.

8. A loom having reed) bars forming a raceway and a shuttle in the raceway, in combination with drivers on opposite sides of the shuttle, outside the warps, coperating rollers on the drivers and shuttle, pinions carried by the rollers, racks to gear with thepinions of the driver rollers, racks furnished b the reed bars to gear with the pinions of t e shuttle rollers and means for traversing the drivers.

9. A loom having a shuttle and reed bars forming a raceway for the shuttle in combination with means outside the shed for positively driving the shuttle, with coperating rollers on the shuttleV and driving means, the rollers on the shuttle having inions gearing with the reed bars, which crm racks for said pinions.

10. A loom having a shuttle and reed bars 'forming a raceway for the shuttle, in combination with means outside the shed for i positively driving the shuttle, with coper- 

